header {
  text-align: center;
  line-height: 44px;
}

.ad-bg {
  background: url(../../assets/imgs/advertisement-bg.jpg) no-repeat center;
  background-size: cover;
  .slogn {
    left: 0;
    bottom: 124px;
    font-size: 36px;
    color: #fff;
    width: 100%;
    text-align: center;
  }
  .btn {
    width: 105px;
    height: 40px;
    text-align: center;
    line-height: 20px;
    border-radius: 20px 20px 20px 20px;
    background-color: #ffff;
    top: 80px;
    left: 260px;
  }
}
